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Want rails-like templating for your Webmachine views? This is your gem.

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Integration of some Rails-style view conventions into Webmachine. Uses your resource as a view context.


Add this line to your application's Gemfile:

gem 'webmachine-actionview'

And then execute:

$ bundle

Or install it yourself as:

$ gem install webmachine-actionview


Include Webmachine::ActionView::Resource in resources you want to use ActionView. Somewhere in your app's startup, you'll need to tell it where views live and (optionally) what handlers you're supporting, for example:

Webmachine::ActionView.configure do |config|
  config.view_paths = [MY_VIEWS_PATH]
  config.handlers = [:erb, :haml, :builder]

In your resource, you'll need to render the view at some point. Rendering is broadly similar to that in Rails. The simplest thing you can do is this:

class HomeResource < Webmachine::Resource
  include Webmachine::ActionView::Resource
  def to_html

This will look for a template called "home" in your Webmachine::ActionView.configuration.view_paths. By default, this will look for an application layout of layouts/application.

You can be more specific:

render template: 'other_template', layout: 'mini'

You can suppress a layout:

render layout: nil
# or
render layout: false

Your resource itself is used as the view context. This means that you can use instance variables as you would in Rails. For example:

class CustomerResource < Webmachine::Resource
  include Webmachine::ActionView::Resource

  def resource_exists?
    @customer = Customer.find(some_id)

  def to_html

And in an associated customer.html.erb template, @customer will be available:

<p class="name"><%= %></p>

You can also render partials from your views:

render partial: 'shared/my_partial'

Partials are subject to the same conventions as Rails, i.e. their filenames begin with an underscore, but no underscore is required when making a call to render partial: 'some_partial'.


This gem came about a lot quicker due to someone else already having fiddled with the internals of ActionView. The link I originally found is, so I think that means thanks to @drogus - pretty sure those are his slides linked to from that page.


  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request
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